MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 377

• Manufacturer Part Number: MMC2114
• Description: M CORE Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

17.11.1 Frame Length
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
MOTOROLA
Serial Communications Interface Modules (SCI1 and SCI2)
The transmitter can generate either 10-bit or 11-bit frames. In SCICR1,
the M bit selects frame length, and the PE bit enables the parity function.
One data bit may be an address mark or an extra stop bit. All frames
begin with a start bit and end with one or two stop bits. When transmitting
9-bit data, bit T8 in SCI Data Register high (SCIDRH) is the ninth bit
(bit 8).
1. When implementing a multidrop network using the SCI, the address mark bit is used to
M Bit
Freescale Semiconductor, Inc.
designate subsequent data frames as a network address and not device data.
0
1
For More Information On This Product,
Table 17-5. Example 10-Bit and 11-Bit Frames
Length
Frame
10 bits
11 bits
Go to: www.freescale.com
Serial Communications Interface Modules (SCI1 and SCI2)
Start
Bit
1
1
1
1
1
1
1
1
1
1
Data
Bits
8
7
7
7
9
8
8
8
7
7
Parity
Yes
Yes
Yes
Bit
No
No
No
No
No
No
No
Address
Mark
Yes
Yes
Yes
No
No
No
No
No
No
No
Advance Information
(1)
Transmitter
Bit(s)
Stop
1
2
1
1
1
2
1
1
2
2
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